Ultra-broadband TEM double flared exponential horn antenna

Details Ultra-broadband TEM double flared exponential horn antenna Ultra-broadband TEM double flared exponential horn antenna

1992-03-09

1994-06-28

Wimer, Michael C.

Communications: radio wave antennas

Antennas

Wave guide type

343859, H01Q 1302

Patent

active

053251059

ABSTRACT:
An ultra-broadband transverse electromagnetic (TEM) exponential antenna in which the radiating or receiving structure comprises first and second elongated conductors have a feed end comprising first and second narrow conductor strips. At an opposite radiating or receiving end, the widths of the first and second conductors expand exponentially in the H-plane, and the spacing between the first and second conductors expands exponentially in the E-plane, thereby providing a double flared, exponentially tapered, transverse electromagnetic horn antenna. Two TEM horn design embodiments are described herein and differ only in the lauching device by which the radiating structure is fed, which converts an input unbalanced transverse electromagnetic wave into a balanced transverse electromagnetic wave. A first preferred embodiment employs a stripline infinite balun as a launching device, while a second embodiment employs a cavity backed waveguide as a launching device. An input coaxial connector introduces an unbalanced transverse electromagnetic wave into the launching device, either the infinite balun or the cavity backed waveguide.

REFERENCES:
patent: 2454766 (1948-11-01), Brillouin
patent: 2946999 (1960-07-01), Kelleher et al.
patent: 3312975 (1967-04-01), Huelskamp
patent: 4201956 (1980-05-01), Kienberger et al.
patent: 4918458 (1990-04-01), Brunner et al.
patent: 5081466 (1992-01-01), Bitter
The ARRL Antenna Book, Published by the ARRL, Newington, Conn., 15th Edition, 1988, pp. 20-25 to 20-26.
Sengupta et al., "Rudimentary Horn Antenna," IEEE Transactions on Antennas and Propagation, Jan. 1971, pp. 124-126.
Cohn, "Design of Simple Broad-Band Wave-Guide-to-Coaxial-Line Junctions," Proceedings of the I.R.E., Sep. 1947, pp. 920-926.

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